Lock.



1. H.\ SHAW.

LOCK.

APPLICATION FILED FEB. I2. 1914.

Patented J une 12, 1917.

4 SHEETS-SHEET L.

I? TTOR/VEY WITNESSES: \f-Q MM WET i J ..H-. SHAW.

LOCK. APPLICATION FILED FEB. 2. 1914.

Patented June 12, 1917.

M m 2 m E my m m W% m J. H. SHAW.

LOCK. APPLICATION FILED FEB. I2. 1914.

Patented June 12, 1917.

4 SHEETS-SHEET 3- I INVENTOR WITNESSES:

A TTOR/VEY J. H. SHAW.

LOCK.

APPLICATION FILED 8.12.1914.

1,229,334., Patented June 12, .1917.

WITNESSES. 7 I jg mg} w upmw y ED earns PAENT JOHN H. SHAW, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT & COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

Specification of Letters Patent.

Patented June 12, 1917.

To all whom it may concern:

Be it known that 1, JOHN H. SHAW, a citizen of the United States, residing in the city and county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

The present invention relates to looks,-

and more particularly to locks having a guarded latch bolt. In the embodiment shown in the drawings, my improvements are applied to a union or escutcheon lock, but it will be understood from the following description that they are likewise applicable to locks of other types.

In locks where the latch bolt is guarded by a deadlocking device which is normally held inoperative, and only released from an inoperative position by contact with the strike of a controller projecting through the lock front or face plate, it has been demonstrated by experience that the guarding or deadlocking mechanism frequently gets out of order, and fails to work properly. Very often, this is due to the shrinking of the door away from the strike to such an extent that the controller of the deadlocking mechanism is not pushed in farenough when the door is closed. Again, the deadlocking member is apt to jam or stick in the inoperative position which it normally occupies.

The primary object of my invention is to overcome the disadvantages above stated. More particularly, the present invention contemplates the provision of a lock, wherein the latch bolt instead of being guarded by a deadlocking member, which moves to deadlocking position only when the door is closed, is guarded by a deadlocking member which is normally operative to deadlock the latch bolt when the door is either open or closed. Provision is made for releasing the latch bolt momentarily as the door is closed 7 to permit its incursion on contact with the strike as usual, but as the latch moves out into the opening in the strike, the deadlocking member immediately reassumes its normal deadlocking position. My invention also contemplates the provision of a lock of this description, in which it is impossible to force back the latch bolt by tampering with the above mentioned releasing means when the door is closed. Y

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings,

Figure 1 is a side elevation of a unit lock embodying my improvements.

Fig. 2 is an end elevation of the lock, looking toward the face plate or front.

Fig. 3 is a top plan view of the lock.

Fig. 4 is an inside view of one escutcheon and the lock mechanism carried thereby, with the cover plate omitted, showing the parts in the positions which they assume when the latch bolt and the releasing bolt are protracted.

Fig. 4 is a detail of the hubs bolt retracting yoke.

Fig. 5 is a view similar to Fig. 4, showing the releasing bolt partly retracted, so as to release the latch bolt.

Fig. 6 is a fragmentary view similar to Fig. 4, showing the position of the parts when the door is closed.

Fig. 6 is a section on line (B -6- of Fig. 6.

Fig. 7 is a section on line 77 of Fig. 4.

Fig. 8 is a section on line 88 of Fig. 6.

Fig. 9 is a section on line 99 of Fig. 4.

Fig. 10 is a view similar to Fig. 4, with the latch bolt, releasing bolt and other parts omitted.

Fig. 11 is a section on line 11-11 of Fig. 5.

Fig. 12 is a section of line 12-12 of Fig. 6.

Fig. 13 is a detail of the releasing bolt.

Fig. 14 is a detail of the deadlocking member for the releasing bolt, and. i

Fig. 15 shows in end elevation and side and latch elevation the controller for said deadlocking member.

Referring to the drawings, the lock selected for illustration comprises an outer escutcheon 20, an inner escutcheon 21, an outer knob 22, an inner knob 23, a face plate 24, and a latch bolt 25 projecting through the face plate, and adapted to be retracted by mechanism carried by the outer escutcheon. The latch bolt selected for illustration is of the pivoted, or car latch, type and it is provided with a spindle or stem 26, guided at its rear end in a post or standard 27 projecting inward from the outer escutcheon. Between the standard and the latch bolt a. spring 28 surrounds the latch bolt '33 abut wings 34 on spindle 26, which spring normally holds the latch bolt in its protracted position. The latch bolt is adapted to be retracted by means of a two-part yoke 29, cooperating with a hub 30, operated by the inside knob 23, and a hub 3O operated by the outside knob 22. The outer knob may be dogged by stop work mechanism 30 30, 30 associated with the outside hub, as shown in Fig. 10. The parts or members of the yoke 29 are indicated at 31 and 32 respectively, the .part 31 *being suitably secured to the latch bolt, and the part 32 having a lost motion (pin and slot) connection -with the part 31, as indicated in Fig. 5, and being provided with lugs or wings 33, cooperating directly with the hubs 30 and 30 respeetively. In retractingthe latch bolt, the hubs act'directlyon the part-'32 of the yoke and shift it individually until the wings the "part 31, whereupon the bolt may be retracted by said art 31.

The latch "bolt 25 is normally deadlocked in its protracted position by means such as the following: Pivotedtransversely in a cutawaypor'tion of the post or standard 27 is a deadlocking'le'ver 35. The pivot 36 olf'said lever is located intermediate of the ends of the latter. A spring 37facting on one end 38 of said lever'normally holds it in apositionwherein the otherend 39 is in the pathof the rear "extremity 40 of "the latch spindle. 26. In other words, the lever 35 normallyblocks the latchs'pi'ndle'at the rear end-of the latter,andthereby prevents the latch bolt from being forced inward. In orderto'permit the incursion of thelatch bolt when-the door is being closedfso that the bolt will clear "the strike I provide a suitable releasing member, such as the releasing bolt 41. The *latch bolt "25 and releasing bolt 41 maybe mounted on a commonpivot 42, as shown in Fig. 3, and the "releasing bolt 41 is so constructed and arranged that it will engage thestrike prior tothe engagement with the latter of the latch bolt, and will releasethe lever 35 from itsdeadlo'cking po'sitionbefore the latch boltcomes 1n contact with=the strike. Tothis end, thereleasing bolt is provided with a rounded face 43, located in front of the beveled latch bolt face with respect to the strik'e, and said releasing bolt is'pro'vided witha rectilinearly movable shank or stem 44 pivoted to the bolt head at 45, and provided with a rear eX- tremity 46, which, when the releasing bolt is forced inward, engages the extremity 38 of the deadlocking lever 35'and shifts it in oppositionto the spring 37 in such am'anner as to release the latch bolt shank,-as shown in Fig. 11. WVhen released by the bolt 41, the latch bolt 25 on contacting with the strike moves inward in the usual manner, and thenmoves outward into the opening of the strike as usual, The releasing bolt enters the same openingv of the strike engaged by the'latch bolt, and as the shank 44 moves toward the front or face "of the lock, the

deadlocking device 35 will be released thereby, so as to again deadlock the latch bolt in its protracted position.

When the door is to be opened by actuation of either knob, the corresponding hub will first engage and operate the member 32 of the retracting yoke, which member has a shoulder 47 adapted to-engage the lever-35 in-such=a manner as-to release the latch bolt for retraction before the lugs 33 of the member 32 engage the lugs 34=of-the yoke member 31 forthe purpose of actuating'it.

As-the releasingbolt isusually considerably narrower than the latch bolt, it 'cannot be so readily'attacked by an instrument inserted between the face plate and. the strike, but-in order to prevent anypossibility-ofreleasing the "latch bolt by attaekon the releasing bolt, 'I may provide an "automatically operated 'deadlocking mechanism for the releasing belt which is controlled by movement of the outer face of the door against the j amb. To this end, the releasingbolt is'ad'apted to bedeadlockedby the lever48, pivoted in the case-at 49, and normally urgedby'a spring 50 into the-path of the releasing bolt. When the door is open, the lever 48 is held 'in an inoperative position-b'y a spring protractedplunger 51,'having an'inclined recess 5-2, in which the free end of the deadlocking lever is supported. Thespring-53 normally protracts the plunger 51 into a rabbet-54 in'the outside escutcheon 20, in which position the netch52 of the plunger is so located as to hold the de'adlockinglever ou-tof the path of thcreleasing bolt. When, however, *the door is closed,'=the plunger 51 is pushed in by c0ntact with the jamb, as shown in Fig. 8, whereuponthe deadlocking lever 48 is permitted to move downward into the deepest part of thenotch 52, and to eng'agetherear surface ofthe bolt he'ad ll, as shown in Fig. 6". Inathis manner, the releasing bolt controlling the operation of the latch bolt is automatically deadlocked as the door is closed. When the door'is tobe openedythe member I 32 of the retracting yoke releases the releasing bolt as'well as the 'deadlocking member 35. To this end, a-lug 55, projecting from oneo'f the arms or branches of the member'32,is adapted to en'gagea shoulder 56bnthe' de-adlocking l'ever 48, 50 that as the yoke meinber 32 'i'sret'r-acted, the deadlockinglever 48 will be swung"out ofthepa'th of the releasing bolt in an obvi'ous m'anner.

The releasing bolt is retracted with the latch bolt, owing to the factthat the former isprovided at-its'rear surface with a-pin' 5T extending into the path of the latch bolt head, as shown in Fig. 6 and adapted to be .the incursion of said stem,

engaged thereby as the latch bolt is retracted.

Various mmlilications in the construction described may be adopted without digressing from my inventive idea as defined in the claims.

I do not claim herein the organization of the parts of a union or escutcheon lock, as claimed in my companion application, Serial N 0. 818,397, filed on even date herewith, but what I do claim is 1. In a lock, a normally protracted latch bolt, moans normally deadlocking the same in protracted position, means for releasing the latch bolt as the door is being closed and means for deadlocking said releasing means; substantially as described.

2. In a look, a normally protracted latch bolt, means normally deadlocking the same in protracted position, means for releasing the latch bolt as the door is being closed, and means for deadlocking said releasing means automatically by the closing of the door; substantially as described.

3. In a lock, a normally protracted latch bolt, means normally deadlocking the same in protractedposition, means for releasing the latch bolt as the door is being closed, means for deadlocking said releasing means automatically by the closing of the door, and means for retracting said latch bolt, operatively connected with both of said deadlocking means; substantially as described.

l. In a look, a normally protracted latch bolt, means normally deadlocking the same in protracted position, means for releasing the latch bolt as the door is being closed, means for deadlocking said releasing means, a knob for retracting the latch bolt, and means of connection between said knob and both of said deadlocking means to cause the retraction of the bolt by said knob when the door is closed; substantially as described.

5. In a lock, a normally protracted latch bolt, a deadlocking lever normally deadlocking said latch bolt in its protracted position, a releasing bolt acting on said deadlocking lever to release the latch bolt as the door is being closed, and means for deadlocking said releasing bolt; substantially as described.

6. In a lock, the combination of a pivoted latch bolt, a stem or spindle pivoted thereto, means normally protracting said latch bolt, a deadlocking lever normally blocking and a releasing bolt having a shank adapted to engage said deadlocking lever as the door closes, to move said lever out of operative position; substantially as described.

TI In a look, a normally protracted latch bolt, means normally deadlocking the same in protracted position, a releasing bolt for releasing the latch bolt as the door is being closed, means for deadlocking the releasing bolt automatically on the closing of the door, and latch-retracting means, operatively connected with both of said deadlocking means; substantially as described.

8. In a lock, a normally protracted latch bolt, a lever normally deadlocking said latch bolt in its protracted position, a releasing bolt for said deadlocking lever, means in cluding a second deadlocking lever for deadlocking said releasing bolt automatically by the closing of the door, a knob for retracting the latch bolt, and means of connection between said knob and both of said deadlocking levers, whereby the bolt may be retracted by the knob when the door is closed; substantially as described.

9. In a lock, the combination of a normally deadlocked latch bolt, a releasing member therefor, and means for deadlocking the releasing member; substantially as described. 1

10. In a look, a normally protracted latch bolt, means for deadlocking the same in protracted position under normal conditions, a releasing bolt for said means, and means operative automatically on the closing of the door to deadlock said releasing bolt; substantially as described.

11. In a lock, a latch bolt, a bolt controlling the operation thereof, and means for deadlocking the controlling bolt as the door is closed; substantially as described.

12. In a lock, the combination of a pivoted latch bolt, means for retracting the same, a stem or spindle pivoted to said latch bolt, means normally protracting said bolt, a deadlocking lever associated with the rear end of said stem or spindle, and normally lying in the path of said stem so as to block the incursion of the bolt, and a releasing bolt having a shank adapted to engage said deadlocking lever and release the same as the door is being closed; substantially as de-' scribed.

13. In a lock, the combination of a pivoted latch bolt, means for retracting the same, a stem or spindle pivoted tosaid bolt, a post or standard forming a guide for said stem or spindle, a deadlocking lever associated with said post or standard, and cooperating with the rear portion of said stem to block the incursion of the bolt under normal conditions, and a releasing bolt having a shank adapted to engage said deadlocking lever to release the same when the door is closed; substantially as described.

14. In a lock, a pivoted latch bolt, means for retracting the same, a stem pivoted to said latch bolt, a post or standard in which said stem is guided for sliding movement, deadlocking means for said latch bolt associated with said standard, and cooperating directly with said stem, a releasing bolt for said deadlocking means, means for deadl0 ing the latch bolt the closing of the door, and means of connec-' deadlocking means whereby the bolt tion between both ofsaid and said retracting means,

i 5 may be retracted by the latter when the door is closed; substantially as described.

15. In a lock, the combination of a latch bolt, means for dogging the same while the door is open, means for temporarily releasto permit the closing'of the door, and means for ,deadlocking said releasing means; substantially as-described.

16. A union lock having a normally five cents each, by addressing dogged latch bolt, and means for releasing said bolt to permit the closing of the door; substantially as described.

17. In a lock, a pivoted latch bolt, means normally dogging the same, and a releasing bolt pivoted coincidently with said latch bolt; substantially as described.

In witness whereof, I have hereunto set my hand on the 30th day of January, 191%.

' JOHN H. SHAW. Witnesses:

FRANK T. KIRsoHNnR, BERTHA RAY.

the Commissioner of Patents,

Washington, D. G. 

